<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索和添加区域 -->
      <el-row :gutter="10">
        <el-col :span="8"
          ><el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button> </el-input
        ></el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- {{ scope.row }} -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClose"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：<el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的 正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法邮箱"));
    };

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile =
        /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        // 合法的手机号
        return cb();
      }
      cb(new Error("请输入格式正确的手机号"));
    };

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: "",
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名的长度在3-10个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码的长度在6-15位之间",
            trigger: "blur",
          },
        ],
        email: [
          {
            required: true,
            message: "请输入邮箱",
            trigger: "blur",
          },
          {
            validator: checkEmail,
            trigger: "blur",
          },
        ],
        mobile: [
          {
            required: true,
            message: "请输入电话",
            trigger: "blur",
          },
          {
            validator: checkMobile,
            trigger: "blur",
          },
        ],
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          {
            required: true,
            message: "请输入邮箱",
            trigger: "blur",
          },
          {
            validator: checkEmail,
            trigger: "blur",
          },
        ],
        mobile: [
          {
            required: true,
            message: "请输入电话",
            trigger: "blur",
          },
          {
            validator: checkMobile,
            trigger: "blur",
          },
        ],
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      //已选中的角色id
      selectedRoleId: "",
    };
  },
  created() {
    // 调用函数
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      // console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败");
      }
      this.userlist = res.data.users;
      this.total = res.data.total;
      // console.log(res);
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      // 当展示的数据条数发生改变后，重新赋值pagesize
      this.queryInfo.pagesize = newSize;
      // 再次调用函数，发起数据请求 刷新数据
      this.getUserList();
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage);
      // 当页码值发生改变后，重新赋值pagenum
      this.queryInfo.pagenum = newPage;
      // 再次调用函数，发起数据请求 刷新数据
      this.getUserList();
    },
    // 监听switch开关状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新用户状态失败");
      }
      this.$message.success("更新用户状态成功");
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return; //如果失败，直接return
        //否则可以发起添加用户的请求
        const { data: res } = await this.$http.post("users", this.addForm);
        // console.log(res);
        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败");
        } else {
          this.$message.success("添加用户成功");
          // 隐藏添加的对话框
          this.addDialogVisible = false;
          // 刷新用户列表 重新获取数据
          this.getUserList();
        }
      });
    },
    // 展示用户编辑的对话框
    async showEditDialog(id) {
      // console.log(id);
      const { data: res } = await this.$http.get("users/" + id);
      // console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("查询信息失败");
      }
      this.editForm = res.data;
      // 显示修改框
      this.editDialogVisible = true;
      // console.log(id);
    },
    // 监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return;
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        } else {
          // 关闭对话框
          this.editDialogVisible = false;
          // 刷新数据列表
          this.getUserList();
          //提示修改成功
          this.$message.success("更新信息成功");
        }
      });
    },
    // 根据用户对应的id删除用户
    async removeUserById(id) {
      // console.log(id);
      // 询问用户是否确认删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      // 如果用户确认删除，则返回值为字符串confirm
      //如果用户取消删除，则返回值为字符串cancel
      // console.log(confirmResult);
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      } else {
        // console.log("确认了删除");
        const { data: res } = await this.$http.delete("users/" + id, id);

        if (res.meta.status !== 200) {
          return this.$message.error("删除失败");
        } else {
          this.$message.success(res.meta.msg);
        }
        // 刷新用户列表
        this.getUserList();
      }
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo;
      // 在展示对话框之前获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolesList = res.data;
      this.setRoleDialogVisible = true;
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error("请选择要分配的角色");
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        { rid: this.selectedRoleId }
      );
      // console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("分配权限失败");
      }
      this.$message.success("分配权限成功");
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      // 清空选择的对话框
      this.selectedRoleId = "";
      this.userInfo = {};
    },
  },
};
</script>

<style lang="less" scoped>
</style>